JPS6243307Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray film cassette, and more particularly to an improvement in the opening/closing structure of its lid.

In general, this type of X-ray film cassette consists of a rectangular tray-shaped container that stores the film and a lid that is attached to the container with a hinge or the like so that it can be opened and closed. Since opening and closing operations are performed in a dark room, an easy-to-operate device is required. However, the conventional devices had problems in opening/closing operations, especially opening operations, and were not always satisfactory.

This invention was made in consideration of the above circumstances,
An object of the present invention is to provide an X-ray film cassette with improved ease of opening the lid in a darkroom.

Next, details of the present invention will be explained with reference to the drawings for one embodiment.

As shown in FIGS. 1 and 2, the container 2 has an outer wall 3 protruding from its periphery, and an inner wall 4 is provided in a substantially annular shape inside the outer wall 3. A circular groove portion 5 is formed. Furthermore, inner wall 4
is slightly lower than outer wall 3. A lid 7 having a bent portion 13 around the periphery is attached to the container 2 via a hinge 8 at the rear edge so as to be openable and closable.
By closing the container 2, the inside of the container 2 is optically shielded from the outside, and the film 1 is stored inside (inside the inner wall).
is protected. A cushion 31 is attached to the inner surface of the lid 7 to stably hold the film 1, and is made of, for example, felt.

Furthermore, as shown in FIG. 3, hooks 11 are attached to the vicinity of the front edges of the grooves 5 on both sides of the container 2, respectively. This hook body 11 is shown in FIGS. 8 and 9.
As shown in the figure, a hook portion 9 having a slope 10 is formed, with the slope 10 facing outward, and this hook portion 9 engages with a sliding piece 24 of the lid body 7, which will be described later. A pair of opening springs 12 are attached within the rear groove portion 5 of the hook body 11.

Further, as shown in FIG. 3, an operation window 15 is provided at the front center of the outer surface of the lid 7, and a knob 32 is formed at the front edge of the bent portion 13. An operating body 16 is attached to the inner surface of the lid body 7 so as to be slidable in the front-back direction, with the operation protrusion 18 facing the operation window 15. A pair of sliding pieces 24 are attached so as to protrude from a notch 14 which is a part of the bent part 13.

Details of this configuration will be explained with reference to FIGS. 4 to 7 and FIG. 10.

The operating body 16 has a V-shaped notch on both sides of a rectangle to form a pair of constricted parts 17 having slopes 23, and an operating protrusion 18 is provided on the upper surface.
This operation protrusion 18 faces the operation window 15 of the lid 17 and is attached to the inner surface of the lid 7 via an upper operation body cover 20 and a lower operation body cover 21. Further, the lower surface of the operating body 16 has a recess 1 in order to reduce the contact surface with the lower cover 21 and improve sliding movement.
9 is formed.

The operating body lower cover 21 has a guide wall 33 and a stopper 34 so that the operating body can slide within a certain range in the front-back direction.

The sliding piece 24 has a hollow part 25 at the rear, and a hooking part 28 having a slope 27 at the tip, and a sliding piece upper cover 29 and a sliding piece lower cover 30.
It is attached to the inner surface of the lid body 7 via. The hook part 28 is located in the notch part 14 of the bent part 13.

The sliding piece 24 is guided by the sliding piece lower cover 29 so that the hooking part 28 protrudes from the cutout part 14 and is slidable, and a retreating spring 26 is provided in the hollow part 25. The rear end is always urged inward by the projection 35, and the rear end is in contact with the protrusion 35.

Furthermore, a pair of connecting rods 22 are provided, one end of which abuts against the constricted portion 17 and the other end of which abuts against the rear edge of the sliding piece 24 .
1. The sliding piece is slidable while being held and guided by the lower cover 30, and slides in conjunction with the operating body 16 and the sliding piece 24.

In order not to hinder the operation of the devices attached to the inner surface of the lid 7, the cushion 31 attached to the inner surface of the lid 7 has cavities (not shown) formed at corresponding locations.

The opening/closing operation of the lid 7 of the film cassette constructed as described above will be explained.

When the film 1 is stored in the container 2 and the lid 7 is closed, the lid 7 may be pressed against the container 2. At this time, the slope 27 of the sliding piece 24 is the slope 1 of the hook body 11.
0, the sliding piece 24 protrudes against the force of the retreating spring 26, and when the lid body 7 is further pressed,
At the position where the hook 9 engages with the hook 28, the sliding piece 24 is moved back by the retreating spring 26, and the hook 9 engages with the hook 28. Thereby, the closed state of the lid body 7 is stably maintained.

Next, when opening the lid 7, place your finger on the operating protrusion 18 of the operating body 16 protruding from the center of the window 15 and slide the operating body 16 in either the front or back direction. 17 moves, one end of the connecting rod 22 slides on the slope 23 of the constricted portion 17, and both connecting rods 22 are simultaneously pushed out in the direction of the outer wall 3, and the sliding piece 24 interlocked therewith is also pushed out, causing the hook portion 9 of the hook body 11 to be pushed out. The latch portion 28 of the sliding piece 24 is released, and the lid 7 is lifted up by the lid opening spring 12 to be in the open state. At the same time, by releasing the finger from the operating protrusion 18, the sliding piece 24 is retracted by the force of the retreating spring 26 and returns to its original position, and the connecting rod 22 and operating body 16 linked thereto also return to their original positions.

In this case, since the lid 7 is only slightly open, it is sufficient to hold the knob 32 and open it wide.

As described above, according to the present invention, it is possible to close the lid by simply pressing the lid, and it is not only possible to release the locks in two places by operating only one operating member, but also to operate the operating member in both directions. Coupled with the tropism, the opening operation of the lid can be easily performed with one hand, and considering that this operation is performed in a dark room, this ease can be said to be extremely excellent.

Furthermore, even though the opening operation is made easier, the stability of the closed state of the lid body is maintained without impairing it, and there is no fear that the film will be exposed.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a sectional view taken along line A-A' in Fig. 1,
Fig. 3 is a partially cutaway perspective view, Fig. 4 is an enlarged plan view of the operating body, Fig. 5 is an enlarged front view of the operating body, Fig. 6 is an enlarged plan view of the sliding piece, and Fig. 7 is an enlarged plan view of the operating body. Figure B-B' sectional view, Figure 8 is an enlarged plan view of the hook body, Figure 9 is the 8th
10 is an enlarged exploded perspective view showing the locking mechanism of the lid. 2...Container, 3...Outer wall, 4...Inner wall, 5...
Groove portion, 7...Lid body, 12...Lid opening spring, 1
3...Bending portion, 15...Operation window, 16...Operation body, 17...Neck part, 18...Operation protrusion, 22
... Connecting rod, 24 ... Sliding piece, 26 ... Backward spring, 28 ... Latching portion.

Claims (1)

[Scope of utility model registration request] A substantially rectangular tray-shaped container having an outer wall protruding from the periphery and an inner wall provided inside the outer wall to form a ring-shaped groove between the outer wall and the outer wall; a lid body whose bent portion is located in the groove and can be opened and closed to cover the opening of the container, wherein a hook body and a lid opening spring are respectively attached to both sides of the groove, and the lid body an operating body having constricted portions on both sides, the operating protrusion facing the operation window of the lid body, and slidable back and forth; and an inner end abutting the constricted portion and capable of sliding left and right A pair of connecting rods and a sliding piece that abuts the outer ends of the connecting rods, is urged inwardly by a retreating spring, and has a hook portion on the outer end that engages with the hook body. A film cassette for X-rays.